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兴发pt登录学报,2018,35(9):107-110https://doi.org/10.16039/j.cnki.cn22-1249.2018.09.024
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Sm,Pr双掺CeO2基固体电解质的合成及性能研究
魏白光,吕秋月
兴发pt登录 教务处;吉林毓文中学
Synthesis and Characterization of Sm and Pr Double Mixed CeO2based Solid Electrolyte
WEI Bai-guang, LV Qiu-yue
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摘要

利用溶胶-凝胶法合成固体电解质Ce0.8Sm0.2-xPrxO1.9(x=0.02~0.08),通过用X射线衍射(XRD)、原子力显微镜(AFM)、拉曼光谱(Raman)和交流阻抗谱对固溶体的微结构和电性能进行了表征。XRD分析结果表明:经800℃烧结2h后样品均为单相立方萤石结构,平均晶粒尺寸为35-46nm之间。AFM图像表明,样品晶粒近似球形,分布较均匀,Pr离子掺入后,空洞明显减小,当掺杂量x=0.08时,晶界有小颗粒生成,晶粒尺寸为2~8μm之间。Raman结果表明:Ce0.8Sm0.2-xPrxO1.9是具有氧空位的立方萤石结构,镨离子的掺杂有利于氧空位的形成。交流阻抗测试表明,随着Pr离子的掺杂量的增加Ce0.8Sm0.2-xPrxO1.9的电导率逐渐提高,活化能降低。

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魏白光
吕秋月
Abstract:

The solid electrolyte Ce0.8Sm0.2-xPrxO1.9(x=0.02 ~ 0.08) was prepared by sol-gel method. The microstructure and electrical properties of solid solution were characterized by X ray diffraction (XRD), atomic force microscopy (AFM), Raman spectroscopy (Raman) and AC impedance spectroscopy. The results of XRD analysis show that samples calcined at 800 oC for 4 h possessed single-phase cubic fluorite structure, and the average grain size is between 35-46nm. The AFM images showed that the samples were spherical and distributed evenly. After the incorporation of Pr ions, the voids of the samples decreased obviously. When the doping amount was x=0.08, the grain boundaries were formed with small particles, and the grain size was between 2~8μm. The results of Raman show that Ce0.8Sm0.2-xPrxO1.9 is a cubic fluorite with oxygen vacancy, and the doping of Pr ions is beneficial to the formation of oxygen vacancies. AC impedance spectra indicated that the conductivity of Ce0.8Sm0.2-xPrxO1.9increases with the increase of Pr-doping, and the activation energy decreased.

Key words:sol-gel methodCe0.8Sm0.2-xPrxO1.9X- ray diffractionconductivity
出版日期:2018-09-25发布日期:2018-09-25整期出版日期:2018-09-25
ZTFLH: 溶胶-凝胶法|Ce0.8Sm0.2-xPrxO1.9|X-射线衍射|电导率
引用本文:
魏白光, 吕秋月. Sm,Pr双掺CeO2基固体电解质的合成及性能研究 [J]. 兴发pt登录学报, 2018, 35(9): 107-110.
WEI Bai-guang, LV Qiu-yue. Synthesis and Characterization of Sm and Pr Double Mixed CeO2based Solid Electrolyte . Journal of Jilin Institute of Chemical Technology, 2018, 35(9): 107-110.
链接本文:
http://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2018.09.024http://xuebao.jlict.edu.cn/CN/Y2018/V35/I9/107
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